Detroit is a city that at it's peak had over a million people has fallen on hard times and now is somewhere around have a million people. That city had significantly depopulated over the last 40 or so years.
It's a city that needs some good news, perhaps this light rail line is it, however, is it viable. Investment in public transit is never a bad thing, but it can be if it receives little use by the community it serves. And if a public transit line such as this Q-Line isn't used by the community then there can be little growth from it.
Either way, I wish I could get up there to ride those rails for free. It's only free through July 1st. When the system starts collecting fares how much will people support it.